Answer:
3
Step-by-step explanation:
Answer:
a) ways
b) ways
c) ways
Step-by-step explanation:
Combinatory means combination or arrangement of different elements.
If we have n total elements and we want to find in how many ways we can select x we can use this general formula:
Where
a. How many different ways can four pieces be selected from the 12 colored pieces?
For this case we have:
ways
b. How many different ways can two orange pieces be selected from five orange pieces?
For this case we have:
ways
c. How many different ways can two brown pieces be selected from seven brown pieces?
For this case we have:
ways
The answer is B, 12.1324... is less than or equal to the square root of 175, or 13.2287...
Answer:
A = 21.65 cm squared
Step-by-step explanation:
The basic area formula for a triangle is
We have our base as 5, so we can find the height using right triangle trig. Side BC is opposite the given angle, which is the height, and we are given side CD as 5 which is the base. Using the tangent ratio to find side BC:
which simplifies to
5 tan(60) = x so
x = 8.66
Filling in for the area:
so
A = 21.65 cm squared
The second one is the correct answer